Visual thrombectomy device

Abstract

The utility model relates to the technical field of medical equipment, in particular to a visual thrombectomy device which comprises a positioning connector, a three-channel pipe fitting, an expansion piece and a thrombectomy instrument. A positioning connecting part capable of being connected with the positioning connector is formed at the first end of the three-channel pipe fitting, and the second end of the three-channel pipe fitting is a visual area and is used for observing the blood flow slowing or blocking phenomenon and the thrombus position; the expansion piece and the thrombus extraction instrument stretch into the third end of the three-channel pipe fitting and extend to the second end of the three-channel pipe fitting, and the thrombus extraction instrument stretches into the visual area and is used for extracting thrombus. The visual thrombectomy device provided by the utility model is provided with the visual area, and when the expansion piece is in the expansion state, the blood flow slowing or blocking phenomenon can be observed so as to judge whether the thrombectomy requirement is met or not; the accurate position of the thrombus can be observed, so that the thrombus can be integrally taken out through a thrombus taking instrument, the thrombus body is free of residues, thrombus taking is fast, thrombus taking efficiency is high, and hemodynamics stability of a patient in an operation is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially, relate to a visual thrombectomy device. BACKGROUND

[0002] When the patient with portal vein thrombosis carries out liver transplantation, the intraluminal embolus needs to be taken out completely. At present, the thrombectomy or intraluminal thrombectomy mode is commonly used in surgical operation, and the traditional intraluminal thrombectomy generally adopts the embolus to be taken out by the embolus forceps, and due to the fact that the portal vein blood flow cannot be effectively controlled and the embolus cannot be visualized, there are the defects of long thrombectomy time, much bleeding and possible residual embolus. CONTENT OF UTILITY MODEL

[0003] The utility model provides a visual thrombectomy device to solve the defects of long thrombectomy time, much bleeding and possible residual embolus in the prior art due to the fact that the portal vein blood flow cannot be effectively controlled and the embolus cannot be visualized.

[0004] The utility model provides a visual thrombectomy device, which comprises:

[0005] A positioning connector;

[0006] A three-channel pipe fitting has three hollow conduits in communication with each other, a positioning connector is formed at the first end of the three-channel pipe fitting, and a visual area is formed at the second end of the three-channel pipe fitting for observing the blood flow slowing down or blocking phenomenon and the thrombus position.

[0007] An expansion member and a thrombectomy device are inserted into the third end of the three-channel pipe fitting and extended to the second end of the three-channel pipe fitting, and the thrombectomy device is inserted into the visual area for taking out the thrombus.

[0008] According to the visual thrombectomy device, the positioning connector comprises a female connector, and the positioning connector comprises a male connector matched with the female connector.

[0009] According to the visual thrombectomy device, the female connector comprises a positioning nut having a through threaded hole, and the male connector is formed with external threads matched with the internal threads of the inner wall of the threaded hole.

[0010] According to the visual thrombectomy device, a first valve structure is arranged at the second end of the three-channel pipe fitting to define the one-way input of the blood flow from the second end of the three-channel pipe fitting.

[0011] The visual thrombus taking device further comprises a second flap structure arranged at the third end of the three-channel pipe and used for preventing blood flow from flowing back from the third end of the three-channel pipe.

[0012] The inflation member comprises:

[0013] The balloon can be inflated, and when the balloon extends to the second end of the three-channel pipe and is in an inflated state, the balloon is used for slowing down or blocking blood flow.

[0014] The visual thrombus taking device further comprises a catheter traction member connected with the balloon and extending from the third end of the three-channel pipe to the second end of the three-channel pipe, and the balloon is inflated through the catheter traction member to make the balloon expand.

[0015] The thrombus taking device comprises any one of a stent thrombus taking device, a spiral thrombus taking device and a thrombus forceps.

[0016] The positioning connector is a polytetrafluoroethylene positioning connector, a polyurethane positioning connector or a polycaprolactone positioning connector.

[0017] The three-channel pipe is a polytetrafluoroethylene three-channel pipe, a polyurethane three-channel pipe or a polycaprolactone three-channel pipe.

[0018] The visual thrombus taking device comprises a positioning connector, a three-channel pipe, an inflation member and a thrombus taking device. BRIEF DESCRIPTION OF DRAWINGS

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a visual thrombectomy device provided in one embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the positioning connector provided in one embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of a three-channel pipe fitting provided in one embodiment of this utility model.

[0023] Figure label:

[0024] 1: Positioning connector; 2: Three-channel fitting; 21: Positioning connection; 3: Expansion component; 4: Thrombectomy instrument; 5: First valve structure; 6: Second valve structure; 7: Catheter traction component; 8: Thrombus. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this embodiment and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this embodiment.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this embodiment, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this embodiment, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0029] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] The following is combined with Figures 1-3 This invention describes a visual thrombectomy device. The device includes: a positioning connector 1, a three-channel fitting 2, an expansion member 3, and a thrombectomy instrument 4.

[0031] Specifically, the three-channel fitting 2 has three interconnected hollow tubes. The first end of the three-channel fitting 2 has a positioning connection part 21 that can be connected to the positioning connector 1. The second end of the three-channel fitting 2 is a visualization area for observing blood flow slowing or blocking phenomena and the location of the thrombus 8. The expansion member 3 and the thrombectomy device 4 extend from the third end of the three-channel fitting 2 to the second end of the three-channel fitting 2. The thrombectomy device 4 extends into the visualization area for removing the thrombus 8.

[0032] The positioning connector 1 is used to support and position the three-channel pipe fitting 2, ensuring that the three-channel pipe fitting 2 is stably fixed in the designated position through the positioning connector 1.

[0033] In the actual surgical procedure, firstly, the inferior vena cava is clamped at both ends with clamping forceps, and a positioning hole is opened on the wall of the inferior vena cava. The positioning connector 1 is inserted into the positioning hole, with the upper part of the positioning connector 1 exposed outside the inferior vena cava.

[0034] Then, the positioning connector 21 is connected to the positioning connector 1 to position the three-channel fitting 2 on the positioning connector 1, and the portal vein end is inserted into the second end of the three-channel fitting 2 to ensure that the thrombus 8 can be detected in the visualization area.

[0035] Next, the expansion element 3 is inserted from the third end of the three-channel fitting 2 and extends along the extension direction of the three-channel fitting 2 to the second end of the three-channel fitting 2, ensuring that the expansion element 3 is located upstream of the thrombus 8 in the direction of blood flow. After the expansion element 3 expands, it reduces the blood flow or completely blocks the blood flow. The phenomenon of slowed blood flow or blocked blood flow can be observed through the visualization area. After observing the above phenomenon, the physician determines that the expansion element 3 is effective and the subsequent thrombectomy can be performed. If the above phenomenon of slowed blood flow or blocked blood flow is not observed, it is necessary to further increase the expansion degree of the expansion element 3, or replace the expansion element 3 before continuing the operation.

[0036] Finally, the thrombectomy instrument 4 is inserted through the third end of the three-channel fitting 2 and brought close to the location of the thrombus 8. The thrombus 8 is then removed from the third end of the three-channel fitting 2 using the thrombectomy instrument 4, completing the thrombectomy procedure. Afterward, the expansion element 3, the three-channel fitting 2, and the positioning connector 1 are removed in sequence, the inferior vena cava is sutured, and the hemostat is removed.

[0037] It is understood that, in order to observe the phenomenon of slowed or blocked blood flow and the location of the thrombus 8, the three-channel fitting 2 in this application has at least a visualization area at the second end. However, depending on actual needs, the three-channel fitting 2 can also be designed to be made entirely of a visualization material, such as transparent polymers (e.g., polycarbonate, polymethyl methacrylate, or polyetheretherketone), transparent silicone, or transparent elastomers (e.g., transparent thermoplastic polyurethane).

[0038] This invention provides a visual thrombectomy device, comprising: a positioning connector 1, a three-channel tube 2, an expansion member 3, and a thrombectomy instrument 4. The three-channel tube 2 has three interconnected hollow tubes. The first end of the three-channel tube 2 forms a positioning connection portion 21 that can connect to the positioning connector 1. The second end of the three-channel tube 2 is a visualization area for observing blood flow slowdown or blockage and the location of the thrombus 8. The expansion member 3 and the thrombectomy instrument 4 extend from the third end of the three-channel tube 2 to the second end of the three-channel tube 2. The thrombectomy instrument 4 extends into the visualization area to remove the thrombus 8. This visual thrombectomy device provides a visualization area. On the one hand, when the expansion member 3 is in an expanded state, blood flow slowdown or blockage can be observed to determine whether the thrombectomy requirements are met. On the other hand, the precise location of the thrombus 8 can be observed so that the thrombus 8 can be completely removed by the thrombectomy instrument 4, leaving no thrombus residue. The thrombectomy is fast, efficient, and ensures hemodynamic stability during the procedure.

[0039] In one embodiment of this utility model, the positioning connector 1 includes a female connector; the positioning connection part 21 includes a male connector that mates with the female connector. In this embodiment, the positioning connector 1 is a female connector, and the positioning connection part 21 on the three-channel pipe fitting 2 is a male connector. The positioning and fixing of the three-channel pipe fitting 2 is achieved through the mating and mating of the male connector and the female connector.

[0040] In one embodiment of this utility model, the female connector includes: a positioning nut having a through threaded hole; and a male connector having an external thread that engages with the internal thread on the inner wall of the threaded hole. Figure 1 As shown, the female connector adopts a positioning nut structure, which is inserted into the positioning hole of the inferior vena cava to fix it. Then, by rotating the three-channel fitting 2, the internal and external threads are engaged to install it on the positioning nut. Furthermore, the positioning nut has a hollow through-structure, allowing blood flow.

[0041] In one embodiment of this utility model, the visual thrombectomy device further includes a first valve structure 5, which is disposed at the second end of the three-channel fitting 2 to limit the unidirectional input of blood flow from the second end of the three-channel fitting 2. In this embodiment, the valve limits the direction of blood flow, allowing blood flow to enter unidirectionally from the second end of the three-channel fitting 2 and preventing blood flow from flowing backward from the second end of the three-channel fitting 2.

[0042] In one embodiment of this invention, the visual thrombectomy device further includes a second valve structure 6, which is disposed at the third end of the three-channel fitting 2 to prevent blood from flowing backwards from the third end of the three-channel fitting 2. In this embodiment, the valve restricts the direction of blood flow, allowing blood to flow only between the first and second ends of the three-channel fitting 2, preventing blood from flowing out from the third end. Because the third end of the three-channel fitting 2 is the device port, primarily used to provide the insertion port for the expansion member 3 and the thrombectomy instrument 4, it is necessary to prevent blood from flowing out from this port.

[0043] Understandably, the first valve structure 5 and the second valve structure 6 mentioned above are mainly to prevent blood backflow and allow blood to flow in only one direction. Their function is the same as that of a one-way valve structure, ensuring the smooth operation of the surgery.

[0044] In one embodiment of this utility model, the inflator 3 includes a balloon capable of inflation. When the balloon is inserted into the second end of the three-channel tube 2 and is inflated, it is used to slow down or block blood flow. Figure 1 In the structure shown, the balloon needs to be moved to the right side of the thrombus 8, and then the balloon is inflated to slow down or block blood flow.

[0045] In one embodiment of this invention, the visual thrombectomy device further includes a catheter traction member 7, which is connected to a balloon and extends from the third end of a three-channel tube 2. The catheter traction member 7 pulls the balloon to the second end of the three-channel tube 2, and inflates the balloon through the catheter traction member 7. In this embodiment, the catheter traction member 7 is responsible for both moving the balloon to the designated location, upstream of the thrombus 8, and inflating the balloon.

[0046] In one embodiment of this utility model, the thrombectomy device 4 includes any one of a stent thrombectomy device, a spiral thrombectomy device, and thrombectomy forceps. Other thrombectomy devices may also be used as needed.

[0047] In one embodiment of this utility model, the positioning connector 1 is a polytetrafluoroethylene positioning connector, a polyurethane positioning connector, or a polycaprolactone positioning connector. Depending on actual needs, other materials can also be used to make the positioning connector 1.

[0048] In one embodiment of this utility model, the three-channel fitting 2 is a polytetrafluoroethylene (PTFE) three-channel fitting, a polyurethane (PU) three-channel fitting, or a polycaprolactone (PVC) three-channel fitting. Depending on actual needs, other transparent materials can also be used to make the three-channel fitting 2.

[0049] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A visual thrombectomy device, characterized in that, include: Positioning connector (1); The three-channel fitting (2) has three hollow pipes that are connected to each other. The first end of the three-channel fitting (2) has a positioning connection part (21) that can be connected to the positioning connector (1). The second end of the three-channel fitting (2) is a visualization area for observing the phenomenon of slowed or blocked blood flow and the location of thrombus (8). An expansion member (3) and a thrombectomy device (4) are inserted into the third end of the three-channel tube (2) and extend to the second end of the three-channel tube (2). The thrombectomy device (4) is inserted into the visualization area to remove the thrombus (8).

2. The visual thrombectomy device according to claim 1, characterized in that, The positioning connector (1) includes a female connector; the positioning connection part (21) includes a male connector that mates with the female connector.

3. The visual thrombectomy device according to claim 2, characterized in that, The female connector includes: a positioning nut having a through threaded hole; and a male connector having an external thread that engages with the internal thread on the inner wall of the threaded hole.

4. The visual thrombectomy device according to claim 1, characterized in that, Also includes: The first valve structure (5) is located at the second end of the three-channel fitting (2) and is used to limit the blood flow to be input unidirectionally from the second end of the three-channel fitting (2).

5. The visual thrombectomy device according to claim 1, characterized in that, Also includes: The second valve structure (6) is located at the third end of the three-channel fitting (2) and is used to prevent blood from flowing backward from the third end of the three-channel fitting (2).

6. The visual thrombectomy device according to any one of claims 1 to 5, characterized in that, The expansion member (3) includes: The balloon is inflatable and, when inserted into the second end of the three-channel fitting (2) and inflated, is used to slow or block blood flow.

7. The visual thrombectomy device according to claim 6, characterized in that, Also includes: The catheter traction device (7) is connected to the balloon and extends from the third end of the three-channel tube (2) to pull the balloon to the second end of the three-channel tube (2). The balloon is inflated by the catheter traction device (7) to make the balloon expand.

8. The visual thrombectomy device according to any one of claims 1 to 5, characterized in that, The thrombectomy device (4) includes any one of a stent thrombectomy device, a spiral thrombectomy device, and thrombectomy forceps.

9. The visual thrombectomy device according to any one of claims 1 to 5, characterized in that, The positioning connector (1) is a polytetrafluoroethylene positioning connector, a polyurethane positioning connector, or a polycaprolactone positioning connector.

10. The visual thrombectomy device according to any one of claims 1 to 5, characterized in that, The three-channel fitting (2) is a polytetrafluoroethylene three-channel fitting, a polyurethane three-channel fitting, or a polycaprolactone three-channel fitting.

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